> -----Original Message-----
> From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On
Behalf
> Of ivp
> Sent: 24 September 2010 15:22
> To: Microcontroller discussion list - Public.
> Subject: Re: [OT] YES MY KEYBOARD WORKS!
>=20
> > Dremel works just fine on Aluminum - use the nice very thin
> > very fragile abrasive disks and enjoy
>=20
> My experience with abrading aluminium is that it quite quickly
> gums up whatever space there is between grit. Faster doesn't
> help, just makes the aluminium even more malleable. I suppose
> if the abrasive disk is wearing down and taking the aluminium
> with it that wouldn't be so bad. Bit messy around electronics
> though but if the case is apart then the insides can be cleaned

You aren't supposed to cut aluminium with abrasive disks unless the
discs are specifically designed for it.  I'm not sure if the little
Dremel wheels will suffer, but if you use a proper angle grinder with
the 4" discs the aluminium clogs up the disc and as it gets hot it
expands and can cause cracks to propagate through the abrasive material.
Ultimately this can  result in "catastrophic deconstruction" of the
disc. =20

Which often hurts.

Mike

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